服务器IP配置功能实现小结

1. 服务器网卡配置文件

/etc/sysconfig/network/ifcfg-***（eth0）

linux-f1s9:/etc/sysconfig/network # cat ifcfg-eth0

BOOTPROTO='static'

BROADCAST=''

ETHTOOL_OPTIONS=''

IPADDR='10.148.128.200/24'

MTU=''

NAME='Broadcom Ethernet controller'

NETWORK=''

REMOTE_IPADDR=''

STARTMODE='auto'

USERCONTROL='no'

配置说明：

BOOTPROTO=static  网卡获得ip地址的方式
　　　　　　　　　　　　　　　　　　Static（静态 ip地址） 
　　　　　　　　　　　　　　　　　　dhcp（通过dhcp协议获取ip）
　　　　　　　　　　　　　　　　　　bootip通过bootp协议获得的ip地址

BROADCAST=192.168.0.255       子网广播地址

HWADDR=:::8E::EE      网卡物理地址

IPADDR=12.168.1.117           网卡IP地址

IPV6INIT=no                   是否启用IPV6

IPV6_AUTOCONF=no

NETMASK=255.255.255.0         网卡对应网络掩码

NETWORK=192.168.1.0           网卡对应的网络地址

ONBOOT=yes                    系统启动时是否设置此网络接口，设置为yes时，系统启动时激活此设备。默认设置为yes

备注：IP netmask有以下两种写法：

　　　　1. IPADDR='10.148.128.200/24' （合并）

　　　　2. IPADDR='10.148.128.200' NETMASK=255.255.255.0 （分开）

　　如果两种写法都存在，'10.148.128.200/24' 方式优先级更高。

2. 后台Shell脚本

2.1 获取IP信息

此处是通过ifconfig -a命令截取，当网卡名比较长的时候网卡名称实际上是显示不完整的。

#!/bin/bash

#########################################

#SCRIPT: getIPInfo.sh

#PLATFORM: Not platform dependent

#PURPOSE:获取网卡信息

#########################################

cd `dirname $`

ipinfo=host_ip_info.properties

logFile=/srv/ftpd/log/iptool.log

dealedCard=""

function toInfoLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) INFO:$@"  >> $logFile

}

if [ -f $ipinfo ]; then

        rm -f  $ipinfo

fi

# 只显示网卡配置文件中的IP，不显示IP映射的监听IP。根据":v" 过滤，

netcards=`/sbin/ifconfig -a | awk '/Link encap:Ethernet/{print $1}'|grep -v ":v"`

for ncard in ${netcards}

do

        flag=$(echo ${dealedCard}|grep ${ncard})

        if [ "X$flag" != "X" ]

        then

                toInfoLog "read same netcard $ncard."

                continue

        fi

        dealedCard="${dealedCard} $ncard"

        # web界面无法显示通过yast新增的IP地址（网卡名称过长）

        ips=`/sbin/ifconfig -a |grep "${ncard} " -A | awk -F: '/inet addr:/{print $2}' | awk '{print $1}'`

        masks=`/sbin/ifconfig -a |grep "${ncard} " -A  | awk -F: '/Mask:/{print $4}'`

        count=

        for ip in $ips

        do

                count=`expr $count + `

                mask=$(echo $masks  |cut -d' ' -f $count)

                toInfoLog "$ncard $ip/${mask}"

                #记录网卡IP信息

                echo "$ncard $ip/${mask}"  >> $ipinfo

        done

done

2.1 虚拟IP新增/删除操作

#!/bin/bash

#########################################

#SCRIPT: config_sysvirtual_ip.sh

#PLATFORM: Not platform dependent

#PURPOSE: [新增]或[删除]虚拟ip

#参数列表：    $  操作类型（add|del）

#            $  虚拟ip

#            $  掩码（例：）

#            $    网卡名

#例如：./config_sysvirtual_ip.sh mode 10.10.10.1 (255.255.255.0) eth0

#########################################

FULL_PATH=$

PATH_BIN=${FULL_PATH%%/config_sysvirtual_ip.sh*}

cd $PATH_BIN

mode=$;

ip=$;

mask=$

netcard=$;

net_name=`echo $netcard|awk -F: '{print $1}'`

logFile=/srv/ftpd/log/iptool.log

function toInfoLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) INFO:$@"  >> $logFile  >&

}

function toErrorLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) ERROR:$@"  >> $logFile  >&

}

# function get_netfile()

# {

  # netcard=$

  # net=`echo $netcard|awk -F: '{print $1}'`

  # netdir="/etc/sysconfig/network"

  # netfile="$netdir/ifcfg-$net"

  # echo $netfile

# }

function get_newlable()

{

    tmp_lable=;

    flag=;

    #web添加的label号可能与YAST修改过的别名冲突。

    #lable_list=`cat $net_cfgfile| grep LABEL|awk -F= '{print $2}'| awk -F\' '{print $}'`

    lable_list=`cat $net_cfgfile| grep LABEL|awk -F= '{print $1}'| awk -F_ '{print $2}'`

    if [ -z "$lable_list" ]; then

        new_lable=;

        flag=;

    else

        for lable in $lable_list; do

            if [ $lable -ge $tmp_lable ]; then

                tmp_lable=$lable;

            fi

        done

    fi

    if [ $flag -eq  ];then

        new_lable=$(($tmp_lable+))

    fi

    echo "$tmp_lable $lable_list"

    echo "new virtual ip_lable =$new_lable"

}

function valid_ip()

{

    for used_ip in `ifconfig | awk -F'addr:|Bcast' '/Bcast/{print $2}'`; do

        if [ $used_ip = "$ip" ]; then

            echo "exited ip $ip"

            exit

        fi

    done

    echo "valid ip"

}

function add_ip()

{

    valid_ip;

    get_newlable;

    if [ $? -eq  ]; then

        echo "exited ip"

        exit

    fi

    /sbin/ifconfig $net_name:$new_lable $ip_mask

    if [ $? -eq  ]; then

        sed -i "$ a\LABEL_$new_lable='w$new_lable'" $net_cfgfile

        sed -i "$ a\IPADDR_$new_lable='$ip_mask'" $net_cfgfile

        echo "set virtual ip $ip_mask to $net_name:$new_lable"

        /sbin/rcnetwork restart $net_name

    else

        echo "Wrong parameters"

        exit ;

    fi

}

function del_ip()

{

    #grep \'${ip}[\/\']  IP之后以\或'结尾。兼容IPADDR_1='3.3.3.3/24' 和IPADDR_1='3.3.3.3'

    lable=`cat $net_cfgfile|grep \'${ip}[\/\']| awk -F= '{print $}'|awk -F_ '{print $}'`

    if [ -n "$lable" ];then

        #LABEL_X='Y' 通过yast操作过以后X会重排，X和Y不一定相等。其次IPADDR_label  ip/mask不一定是在一行。

        sed -i "/^ *LABEL_$lable=/d" $net_cfgfile;

        sed -i "/IPADDR_$lable='$ip/d" $net_cfgfile;

        # 删除对应可能存在的NETMASK行

        sed -i "/NETMASK_$lable='/d" $net_cfgfile;

        echo "delet ip: ${net_name}:w${lable} ${ip_mask}. rntCode=$?"

        /sbin/rcnetwork restart $net_name

    else

        echo "Cannot del:no exits valid ip"

        exit ;

    fi

}

# begin

# 校验IP和netmask有效性 ，略

net_cfgfile="/etc/sysconfig/network/ifcfg-$net_name"

ip_mask=$ip/$mask

new_lable=;

if [ $# -eq  -a  -f $net_cfgfile ]; then

    if [ $mode = "add" ];then

        toInfoLog "add ip begin"

        add_ip $mode $ip $long_mask $net_name     >> $logFile  >&

    elif [ $mode = "del" ];then

        toInfoLog "delete ip begin"

        del_ip $mode $ip $long_mask $net_name     >> $logFile  >&

    else

        toErrorLog "Usage. $0 <add|del> <ip> <netmask> <netcard>"

        exit ;

    fi

else

    toErrorLog "Usage. $0 <add|del> <ip> <netmask> <netcard>"

    exit ;

fi

2.2 IP修改操作

修改操作可能会影响原有业务，除了修改网卡配置文件之外，还需要同步更新相关操作系统文件（如：/etc/hosts,/etc/ssh/sshd_config, /etc/vsftpd.conf等文件）中该IP信息。

入口:

#!/bin/bash

#########################################

#SCRIPT: modIPInfo.sh

#PURPOSE:修改IP

#########################################

FULL_PATH=$

PATH_BIN=${FULL_PATH%%/modIPInfo.sh*}

cd $PATH_BIN

# 记日志统一格式输出

function toInfoLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) INFO:$@"

}

# 备份文件

function backup_proc()

{

    toInfoLog "backup files begin..."

    backup_restore_file backup $netcard

}

# 回退文件

function restore_proc()

{

    # 恢复文件即可。

    backup_restore_file restore $netcard

    #modify_proc $netcard $oldIp $oldmask $newIp $newmask

}

# 修改IP

function modify_proc()

{

    toInfoLog "modify_proc begin"

    # 更新操作系统相关文件  目前只有/etc/hosts

    modify_OS_file  $oldIp  $newIp

    # 更新网卡配置文件

    modify_net_file $netcard $newIp $newmask $oldIp $oldmask

}

# main

function modifiyIP()

{

    toInfoLog "mode ip begin"

    backup_proc

    modify_proc

    if [ $? -ne  ];then

        toInfoLog "modify_net_file failed,restore ip."

        restore_proc $netcard $oldIp $oldmask $newIp $newmask

        exit

    fi

    toInfoLog "modifiyIP $newIp success."

}

# begin

if [ $# -ne  ]

then

    echo "Usage. $0 <netcard> <newIp> <newmask(24)> <oldIp> <oldmask(24)>"

    exit

fi

netcard=$

newIp=$

newmask=$

oldIp=$

oldmask=$

log_file=/srv/ftpd/log/iptool.log

. /opt/tool/iptool/modIPInfoUtil.sh

modifiyIP  >> ${log_file} >&

修改方法

#!/bin/bash

#########################################

#SCRIPT: modIPInfoUtil.sh

#PLATFORM: Not platform dependent

#PURPOSE: 修改IP

#参数列表：

#params：netcard newip newmask oldip oldmask

#########################################

filebackupPath=/opt/tool/iptool

# 记日志统一格式输出

function toInfoLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) INFO:$@"

}

function toErrorLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) ERROR:$@"

}

function bak_restore_file()

{

  mode=$

  filename=$

  if [ $# !=  ];then

    toErrorLog "bak_restore_file params number error"

    exit

  fi

  fileabs=$(echo $filename |awk -F/ '{print $NF}')

  filebackup=${filebackupPath}/${fileabs}_lastBak

  if [ $mode = "backup" ];then

    if [ -f "${filename}" ];then

      cp -rfp $filename $filebackup

      if [ $? =  ];then

        toInfoLog "backup $filename success"

      else

        toErrorLog "backup $filename fail"

        exit

      fi

    fi

  elif [ $mode = "restore" ];then

    if [ -f  "$filebackup" ];then

      cp -rfp  $filebackup $filename

      if [ $? =  ];then

        toInfoLog "restore $filename success"

      else

        toErrorLog "restore $filename fail"

        exit

      fi

     fi

  fi

}

function get_netfile()

{

  netcard=$

  net=`echo $netcard|awk -F: '{print $1}'`

  netdir="/etc/sysconfig/network"

  netfile="$netdir/ifcfg-$net"

  echo $netfile

}

function bak_restore_OS_file()

{

  mode=$

  netcard=$

  #备份网卡信息

  netfile=`get_netfile $netcard`

  toInfoLog "netfile= $netfile"

  bak_restore_file  $mode $netfile

  bak_restore_file  $mode /etc/hosts

  # bak_restore_file  $mode /etc/vsftpd.conf

  #备份dns文件

  # bak_restore_file  $mode /etc/resolv.conf

  # bak_restore_file  $mode /etc/named.conf

}

function backup_restore_file()

{

    mode=$

    netcard=$

    bak_restore_OS_file $mode $netcard

}

#判断ip是否存在，exist——存在，notexist——不存在

function check_file_status()

{

  file=$

  ip=$

  filter=`cat $file|grep $ip`

  if [ "X$filter" != "X" ];then

    echo "exist"

  else

    echo "notexist"

  fi

}

#文件存在ip才进行替换，替换后判断新ip是否存在，不存在替换失败

function replaceIP()

{

  oldIp=$

  newIp=$

  file=$

  result=`check_file_status $file $oldIp`

  toInfoLog "replaceIP $file $oldIp $result"

  if [ $result = "exist" ];then

    toInfoLog "replaceIP   $file oldIp=$oldIp ,newIp=$newIp "

    sed -i 's/'${oldIp}'/'${newIp}'/g' $file

    result=`check_file_status $file $newIp`

    if [ $result = "notexist" ];then

      toErrorLog "replace $file $oldIp to $newIp failed"

      return

    fi

  fi

}

function modify_net_file()

{

    netcard=$

    newIp=$

    newmask=$

    oldIp=$

    oldmask=$

    #备份网卡信息

    netfile=`get_netfile $netcard` 

    result=`check_file_status $netfile \'${newIp}[\/\']`

    if [ $result = "exist" ];then

        toErrorLog "newIp ${newIp} aready exist, modip failed"

        return

    fi

    new_ip_mask=${newIp}\/${newmask}

    toInfoLog "new_ip_mask=$new_ip_mask ,old_ip_mask=${oldIp}/${oldmask}"

    # 替换匹配模式兼容IP/mask 和IP、mask分行(预装环境)的情况 .'${oldIp}[\/\'].* 精确匹配，以防误修改。

    sed -i "s/'${oldIp}[\/\'].*/'${newIp}\/${newmask}'/g"  $netfile

    result=`check_file_status $netfile $new_ip_mask`

    if [ $result = "notexist" ];then

        toErrorLog "replace ip failed"

        return

    fi

    toInfoLog "replace ip ok. network restart..."

    net=`echo $netcard|awk -F: '{print $1}'`

    /sbin/rcnetwork restart $net

}

#查找文件是否存在ip

check_OS_file()

{

  ip=$

  check_file_status /etc/ssh/sshd_config $ip

  check_file_status /etc/hosts  $ip

  check_file_status /etc/my.cnf  $ip

  check_file_status /etc/vsftpd.conf  $ip

  #dns

  check_file_status /var/lib/named/tdtech.com  $ip

  check_file_status /etc/resolv.conf  $ip

  check_file_status /etc/named.conf  $ip

}

# 修改IP时更新sshd_config对应IP  暂不用

function modify_OS_file()

{

  oldIp=$

  newIp=$

  replaceIP  $oldIp $newIp /etc/hosts

  #sshd 暂不涉及

  # replaceIP  $oldIp $newIp /etc/ssh/sshd_config

  # if [ -n "`service sshd status |grep running`" ]

  # then

    # service sshd restart

  # fi

  #vsftp  暂不涉及

  # replaceIP  $oldIp $newIp /etc/vsftpd.conf

  # if [ -n "`service vsftpd status |grep running`" ]

  # then

    # service vsftpd restart

  # fi

  #db  暂不涉及

  # replaceIP  $oldIp $newIp /etc/my.cnf

  # /opt/UBP/bin/modifydb_ip.sh $oldIp $newIp  

  #dns

  # replaceIP  $oldIp $newIp /var/lib/named/tdtech.com

  # replaceIP  $oldIp $newIp /etc/resolv.conf

  # replaceIP  $oldIp $newIp /etc/named.conf

}

2.3 修改网关

比较简单，根据传入的参数更新文件/etc/sysconfig/network/routes并重启网卡。

#!/bin/bash

#########################################

#SCRIPT: updateGateway.sh

#PLATFORM: Not platform dependent

#PURPOSE: 修改Gateway

#参数列表：

#########################################

FULL_PATH=$

PATH_BIN=${FULL_PATH%%/updateGateway.sh*}

cd $PATH_BIN

oldGateWay=$

gatewayAddr=$

gatewayfile=/etc/sysconfig/network/routes

Logfile=IPConfig.log

function toInfoLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) INFO:$@" 

}

function toErrorLog()

{

    echo "$(date +%Y-%m-%d) $(date +%H:%M:%S) ERROR:$@"

}

#检查

function checkGateway()

{

    if [ "X${gatewayAddr}" =  "X" ]

    then

        toErrorLog "gatewayAddr null."

        exit

    fi

    if [ "${oldGateWay}" = "${gatewayAddr}" ]

    then

        echo "mod gatewayAddr is same as before."

        exit

    fi

}

function modGateway()

{

    checkGateway

    toInfoLog "begin update gateway."

    # 备份

    cp ${gatewayfile} ${gatewayfile}_bak

    cat ${gatewayfile}  >>  ${Logfile}

    # 修改

    echo "default ${gatewayAddr} - -" > ${gatewayfile}

    if [ $? -ne  ]

    then

        cp ${gatewayfile}_bak ${gatewayfile}

        toErrorLog "update ${gatewayfile} failed."

        exit

    fi

    # 重启

    service network restart

    if [ $? -ne  ]

    then

        cp ${gatewayfile}_bak ${gatewayfile}

        service network restart

        toErrorLog "update ${gatewayfile} failed when restart."

        exit

    fi

    toInfoLog "update gateway success. ${gatewayAddr}"

}

modGateway  >> ${Logfile} >&

3. 前端配置页面

为了方便配置，web页面中提供IP配置功能，后台配置的修改由上述Shell脚本完成。

巴特西

服务器IP配置功能实现小结

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